In one instance he had 5 different people pick out colors to illustrate the clothing and hair color of a person. Individually he had people look at the color markers in a jar and hold in their mind the marker before they picked it out. Personally I feel that he was sending the message to the person's mind the color he wanted them to pick. At the end he revealed the colors he had picked and it matched exactly what he had predicted in advance.
NFL legend Terry Bradshaw says,
“My family and I are huge fans of David’s but more importantly he is a great friend. He is one of the funniest people I have ever met! When you meet David or see him perform, you will understand why so many people fall in love with his grace and kindness, as he takes your breath away and absolutely blows your mind!”
I feel that watching a mentalist perform reveals the fantastic potential our mind has to help us out in various situations. We are mentally linked in ways we are not aware and this connection is more powerful than we realize.